How long does it take to process a Thai Non-ED visa application at the embassy in Vientiane?

okay, if you've got all the documents required, AND you fill out the online application correctly, upload what's needed in the required fields, submit the application, get the confirmation <- PRINT the confirmation then go to the consulate and pay in cash for the visa you should get approved in 3 - 4 days max.

"Regular visas" (Non-O, Non-B, Non-ED) applications go pretty fast.

Just make sure you go slow, get the uploads correct, check the data entry to make sure there's no mistakes BEFORE you submit it. Most of the reports of them taking a long time are self inflicted because people didn't check their application carefully before submitting it and they had to get emailed for more documents

the Royal Thai Embassy Vientiane has gained a small reputation as being one of the most easy-going embassy in the South-East Asian region. So their workload is predictably large. It is as it is. Vientiane is a nice place and you even could make a tour to Luang Prabang or Vang Vieng in the meantime while you wait. Even in the event you are invited for a personal interview, you can get back to Vientiane within hours by the new fast train between these locations

Let's see what others who have obtained a Thai Visa in Vientiane say...

The website has said 5 to 10 business days, but recent reports are that the Thai Embassy is very busy with their workload of applications being submitted.